Is Oleander Toxic to Horses?
Yes — oleander is toxic to horses and can be fatal.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
Symptoms to watch for
- Vomiting
- Diarrhea
- Drooling
- Slow, fast or irregular heartbeat
- Weakness
- Collapse; can be fatal
Toxic parts
All parts, including dried leaves
Toxic compound
Cardiac glycosides
What to do now
- Call your vet or a pet poison control line immediately — don't wait for symptoms.
- Do not induce vomiting unless a vet tells you to.
- Bring the plant, label or packaging with you so the vet knows exactly what your horse ate.
- Note roughly how much was eaten and when.
Good to know
One of the most dangerous garden shrubs. Small amounts can cause fatal heart problems in pets and horses.
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Pet-safe alternatives
Frequently asked questions
Is oleander toxic to horses?
Yes — oleander is toxic to horses and can be fatal. One of the most dangerous garden shrubs. Small amounts can cause fatal heart problems in pets and horses.
What are the symptoms of oleander poisoning in horses?
Vomiting. Diarrhea. Drooling. Slow, fast or irregular heartbeat. Weakness. Collapse; can be fatal.
What should I do if my horse ate oleander?
Call your vet or a pet poison control line immediately — don't wait for symptoms. Do not induce vomiting unless a vet tells you to. Bring the plant, label or packaging with you so the vet knows exactly what your horse ate. Note roughly how much was eaten and when.
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